Question about Broan-NuTone CV350 Central Vacuum

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Central vac won't turn off unless we unplug - Broan-NuTone CV350 Central Vacuum

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  • 52 Answers

Some units have an on/off switch on the power unit itself. Check to make sure that is not turned on. Unplug your power unit and remove the 2 low voltage wires (not the power cord itself) . The low voltage wires start at the unit and run throught your home and attach to each hose inlet. They are usually attached to the unit by simple wire terminals or wire capped to small wires coming out. Just unlug the terminals or unscrew the wire caps and pull the connections apart. Plug your machine back in. If it still comes on the problem is the relay or circuit board/switch/ relay assembly inside the unit. If it doesn't come on with the low voltage wires unattached then you may have two wires touching somewhere in the low voltage wiring.

Posted on May 22, 2010

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Posted on Jan 02, 2017

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reddevil6
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SOURCE: continuous running

Central vacs have relays in them, some stand alone, others mount on a circuit board. A stuck relay causes this type of problem. At the unit disconnect the low voltage wires, plug in your unit, does it still come on, if it does then you have a bad relay. If it doesn't then you have a problem somewhere in your low voltage wiring. One of the outlets, the wires may be touching or there is a staple casuing a short.

Posted on Mar 06, 2008

  • 4 Answers

SOURCE: NuTone Central vac won't turn off

If the central vacuum tank will not turn OFF even with the switch in the “OFF” position, then the low-voltage wires should be disconnected from the tank. If the tank continues to run and still will not turn off, then most likely the relay inside is defective (but it could be a defective and/or shorted ON/OFF switch). If with the low-voltage wires disconnected the tank is able to then be turned off with the switch, then there is a short in the low-voltage wires or a hose is plugged into an inlet somewhere. ~ TTURAMBAR

Posted on Mar 27, 2009

CorvetteKing
  • 108 Answers

SOURCE: Central Vac will not turn on.

These problems are nearly exclusively caused by a bad circut board and replacing it is the fix. Bad boards can cause many different effects so its nearly impossible to be sure. The 9v signal wire is not enough to short out an entire unit so it is unlikely the hose. If it is a direct connect system and you are pulling power from the 110 somehow that would cause main unit problems but that is unlikely at best. Sounds like a failed board to me.

Best of Luck

Posted on Jun 05, 2009

  • 37 Answers

SOURCE: AirVac ZX6000 won't turn off!

There is a relay board inside your unit which is most likely bad. If you have the make and model, you can contact me and I can order the board for you(pending your mechanical abilities). If not, contact your local central vacuum installation company. www.thevacdudes.com

Posted on Jun 12, 2009

  • 430 Answers

SOURCE: on my kenmore central vac no power unplug unit

Please clarify that we are talking about the central vac LED/switch panel panel and plugging it into a 110 V wall receptacle.
If I understand when you unplug from the power source ,then plug back in the green LED comes on, looking normal ? But when you manually activate the switch on the motor housing of the vac itself the vac does not start and the LED goes out, so no green or red LED at that point?
If this is the case , Kenmore CV's built approx 5 years ago (MADE by EUREKA) and prior had a circuit board with attached cord (as opposed to detachable) which was prone to relay failure. There were several symptoms, most common was that the relay on that switch panel /circuit board would fuse on and the vac would continue to run when the hose was detached from the wall.However some I worked on from that era had exactly the same symptom you describe. If your unit is between 5 and 10 years old and this sounds accurate, you can unscrew this curved side panel relay with one philips screw. Inside on the PCB will be an L shaped black or white 24volt relay, generally rated at 10 amps. The replacement board or relay will be rated at least 24V/ 15 amps or more. If you can isolate your motor and test it separtely with a power cord or meter , the realy/board will be the only control componnet left.
If you have a small tipped soldering IRON, not a gun, you can generally find a replacement relay to rebuild the board for about $6 at an electronics parts store. Otherwise you will need to replace the control board itself, anywhere form $45 to $70 plus service call if you have a tech come out to the house, and the tech will just unscrew , detach wires and replace the board, no repair , approx 15 minutes work. This will likely cost over $100.
Please post back with your results

Posted on Oct 25, 2009

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Central Vac Dust Care 3000C - My system will not turn off when I unplug the hose. I also tried unplugging the low voltage wires from the unit and it will not turn off . Any thoughts?


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AirVac ZX6000 won't turn off!


There is a relay board inside your unit which is most likely bad. If you have the make and model, you can contact me and I can order the board for you(pending your mechanical abilities). If not, contact your local central vacuum installation company. www.thevacdudes.com

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NuTone Central vac won't turn off


If the central vacuum tank will not turn OFF even with the switch in the “OFF” position, then the low-voltage wires should be disconnected from the tank. If the tank continues to run and still will not turn off, then most likely the relay inside is defective (but it could be a defective and/or shorted ON/OFF switch). If with the low-voltage wires disconnected the tank is able to then be turned off with the switch, then there is a short in the low-voltage wires or a hose is plugged into an inlet somewhere. ~ TTURAMBAR

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1 Answer

Hayden Super Vac Premier will not stop unless I unplug


one of two problems cause this. first is a short in the wires that turn it on, the small wires going to the side of the body unplug one of them to see if thats the problem
second is a stuck relay inside the top cofer of the main body

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2 Answers

Central Vac does not shut off


Sounds like the relay that is in the central vac unit is stuck to the ON position. When you plug it back in..does it start right up ? If so.. You should be able to disconnect all the receptacle feeds to the central vac unit at the central vac unit to determine which one ( if any) is calling for the vac to stay on.. if none are.. then it is internal to the vac and may be a stuck relay... Hope that gives you some ideas to check...

Aug 28, 2008 | Vacuums

2 Answers

Beam Central Vac Breaker Pops


http://geeksquad.fixya.com/ThreadView.aspx?prdid=0&thid=797869
Generic problem for all Vacuums
Beam Central Vac Breaker Pops
Posted by tinateggart1 on Jul 17, 2008
The breaker on our beam model 167 central vac popped while in use. Every time I try and restart it, it immediately pops again. What's the problem? Circuit board? Motor? Overheating?
Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. Chances are it is the relay switch on the inside of the Beam Central Vac, if it was a motor, it would not turn on @ all. If it was a circuit board, it may or may not be turned on, but if it will turn on and then pop your circuit breaker than it probably is the relay switch. Please, check with your local Beam vacuum cleaner dealer in your area or contact the Beam website or cust serv @ the phone number listed below. So if you need further assistance, please feel free to contact your local vacuum cleaner dealer in your area or in the yellow pages, or contact the factory phone number or website to further assist you with your questions.

http://www.beamvac.com/usa/ Owner Support
Customer Service 1-800-369-2326 Phone #
Email: beam.dir-support@beamvac.com
Technical Support: beam.tech-info@beasmvac.com
Thanks, Don the Vac Man
Go Ahead. Use Us.



Jul 17, 2008 | Vacuums

1 Answer

Wireing up central vac too braker box.


http://www.geeksquad.fixya.com/ThreadView.aspx?prdid=0&thid=579196
Generic problem for all Vacuums
Wiring up central vac too
Posted by brneault on May 08, 2008
Wiring up central vac too breaker box.

Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure.
A central vac not knowing the brand name or model # uses regular household current and plugs into a regular household inlet and I have never heard of wiring the central vac to the breaker box. The central vac is usually out in the garage or down the basement and will be in the regular household current. You may want to ask the manufacturer or the vac dealer you purchased the central vac from and they might have more information for your and if your central vac needs to be wired to the breaker box they will give you instructions, but I don’t believe that you need to do so. So if you need further assistance, please feel free to contact your local vacuum cleaner dealer in your area or in the yellow pages, or contact the factory phone number or website to further assist you with your questions.
Don – The Vac Man
Go Ahead. Use Us.

May 08, 2008 | Vacuums

2 Answers

I have a one year old Beam central vac. It has supervalves. The handle (connected to the hose stopped turning on the unit. The handle still powers the brush but no longer turns on the suction?


http://geeksquad.fixya.com/ThreadView.aspx?prdid=0&thid=566201
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I have a one year
posted by jon89 on May 02, 2008
I have a one year old Beam central vac. It has supervalves. The handle (connected to the hose stopped turning on the unit. The handle still powers the brush but no longer turns on the suction?

Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. The Beam Central Vac may have more than a one year factory warranty and it sounds to me that you may have a bad relay switch the Central Vac, if you do it should be covered under the factory warranty. Otherwise, you may have a bad supervalves or a wire came loose, if the hose switch turns on the power nozzle then it may be a bad supervalve or a bad relay and to contact the installer or the manufacturer of Beam. So if you need further assistance, please feel free to contact your local vacuum cleaner dealer in your area or in the yellow pages, or contact the factory phone number or website to further assist you with your questions.

http://www.beamvac.com/usa/ Owner Support
Customer Service 1-800-369-2326 Phone #
Email: beam.dir-support@beamvac.com
Technical Support: beam.tech-info@beasmvac.com
Thanks, Don the Vac Man
Go Ahead. Use Us.

May 02, 2008 | Vacuums

1 Answer

Continuous running


Central vacs have relays in them, some stand alone, others mount on a circuit board. A stuck relay causes this type of problem. At the unit disconnect the low voltage wires, plug in your unit, does it still come on, if it does then you have a bad relay. If it doesn't then you have a problem somewhere in your low voltage wiring. One of the outlets, the wires may be touching or there is a staple casuing a short.

Mar 05, 2008 | Eureka 1810 Central System Vacuum

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